Bottom ash as base course and long term stability?
Bottom ash as base course and long term stability?
(OP)
A local highway has had bottom ash used on an experimental basis as base course for about 18 years. It may be the cause of winter time excessive joint heaving that seems worse each year now. When installed it met gradation, soundness and wear specs, but had no tests for frost susceptibility.
Any body have long term experience using it for similar use?
Can it take repetitive loadings under flexible pavement?
Any body have long term experience using it for similar use?
Can it take repetitive loadings under flexible pavement?





RE: Bottom ash as base course and long term stability?
The properties can vary daily, weekly, monthy or annually depending on the fuel and the operation of the facility producing it. One or two tests of the original product would not mean much.
It was probably used because it was cheap or locally accesible.
RE: Bottom ash as base course and long term stability?
In my opinion, you get what you pay for and bottom ash is often free.
RE: Bottom ash as base course and long term stability?
DO NOT BLEND THE BOTTOM ASH WITH LIME KILN DUST IF THERE IS ELEVATED SULFUR CONCENTRATION.
f-d
¡papá gordo ain’t no madre flaca!